Today I released version 2.1 of Wad Compiler, a lazy functional
programming language and IDE for the construction of Doom maps.

This comes about a year after version 2.0. The most significant change is an
adjustment to the line splitting algorithm to fix a long-standing issue when
you try to draw a new linedef over the top of an existing one, but in the
opposite direction. Now that this bug is fixed, it's much easier to overdraw
vertical or horizontal lines without needing an awareness of the direction of
the original lines.

The other big changes are in the GUI, which has been cleaned up a fair bit, now
had undo/redo support, the initial window size is twice as large, and it now
supports internationalisation, with a partial French translation included.